The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
May. 02, 1997
Applicant:
Inventor:
Naosumi Tada, Nabari, JP;
Assignee:
Borg-Warner Automotive, K.K., , JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474110 ; 474135 ; 474138 ; 474101 ;
Abstract
A hydraulic tensioner having an air vent channel formed within or on its housing is provided. Air that mixes into the fluid chamber discharges from the fluid chamber in the bore to an external attachment surface of the housing. The air vent has a circuitous path from the inner wall surface to the external attachment surface, wherein the air vent has cross-sectional area substantially less than the cross-sectional area for the passage to the fluid chamber.